/*
 * Copyright (c) 2010, VeRSI Consortium
 *   (Victorian eResearch Strategic Initiative, Australia)
 * All rights reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the VeRSI, the VeRSI Consortium members, nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package versi.vitro.oaiserviceprovider.service.jena.helper;

import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

import org.apache.log4j.Logger;

import versi.vitro.oaiserviceprovider.service.jena.api.JenaHelper;
import versi.vitro.oaiserviceprovider.service.jena.api.JenaService;

import com.hp.hpl.jena.ontology.OntModel;
import com.hp.hpl.jena.rdf.model.Model;
import com.hp.hpl.jena.rdf.model.ModelMaker;
import com.hp.hpl.jena.util.iterator.ExtendedIterator;

//import edu.cornell.mannlib.vitro.webapp.utils.jena.JenaIngestUtils;

/**
 * {@link JenaService} Helper.
 */
public class JenaHelperImpl implements JenaHelper {

    /** log4j instance. */
    private static final Logger LOGGER = Logger.getLogger(JenaHelperImpl.class);

    /** All valid RDF out pout format. */
    private final Set<String> validRdfFormats;

    /** VITRO/VIVO Jena Ingest utility */
   // private final JenaIngestUtils utils = new JenaIngestUtils();

    /**
     * Default Constructor.
     */
    public JenaHelperImpl() {
	validRdfFormats = new HashSet<String>();
	validRdfFormats.addAll(Arrays.asList("RDF/XML", "RDF/XML-ABBREV", "N-TRIPLE", "TURTLE", "TTL", "N3"));

    }

    /**
     * Constructor.
     */
    public JenaHelperImpl(final Set<String> validRdfFormats) {
	this.validRdfFormats = validRdfFormats;

    }

    /** {@inheritDoc} */
    public boolean validateRDFFormat(final String format) {
	return validRdfFormats.contains(format);
    }

    /** {@inheritDoc} */
    public void printAllModelsSize(final ModelMaker modelMaker) {
	if (isDebugMode()) {
	    ExtendedIterator<String> iterator = modelMaker.listModels();
	    while (iterator.hasNext()) {
		String model = (String) iterator.next();
		LOGGER.info(model.toString() + " size = " + modelMaker.getModel(model).size());
	    }
	}
    }

    /** {@inheritDoc} */
 /*   public Model renameBlankNodes(final OntModel source, final String namespaceEtcStr) {
	return utils.renameBNodes(source, namespaceEtcStr);
    }*/

    protected boolean isDebugMode() {
	//return LOGGER.isDebugEnabled();
	 return true;
    }
}
